1 example sentence using planchette.
Planchette used in a sentence
Planchette in a sentence as a noun
The classic example of the ideomotor effect is the ouija board in which you spell out words letter by letter by "resting" your hand on a wooden planchette and easily believe that it is not you moving it.
Planchette definitions
noun
a triangular board supported on casters; when lightly touched with the fingertips it is supposed to spell out supernatural (or unconscious) messages